Robert Louis Carleton (aka Bob Carleton) (b. Nov. 8 1894 or 1896 - d. 1956) was an American pianist and composer of popular music. He composed over 500 songs, including the World War I hit, "Ja-Da" in 1918.
1918 Sheet music cover
This "War Edition" sheet is a vintage small format War Size Folio, military sheet music: "Ja-Da", "Small War Sized Folio", by Bob Carleton, U.S.N.R.F., Leo Feist, Publ, New York, 1918.
link: Ja-Da music sheet